Abtificial jaws



April 24, 1928 1,667,205

G. F. INGVVERSEN ARTIFICIAL JAWS Filed May 29. 1.924

INVENTOR. 6 F #29 vvc A TTORNE Y.

Patented Apr. 24, 1928.

UNITED STATES GUSTAV FRED IN GWER SEN, or natives; conoaAipo.

ARTIFICIAL JAWS,"

Application filed May 29,

My invention relates to artificial jaws and an objectof theinvention isto provide as a new article of manufacture a simulation of the jaws ofcarnivorous animals for use in mounting skins and-furs.

Another object of the inycntion is to pro vide jaw models for use intaxidermy or for technical or experimental work or for demonstratingpurposes in which the teeth and the jaw structure are formed integrallyof one piece of moldable material and further objects reside in detailsof construction all of which will fully appear in the course of thefollowing description made with reference to the accompanying drawings.y In the drawings in the several views of which like parts are similarlydesignated,

Figure 1 represents a perspective view of a jaw-structure made inaccordance with my invention in simulation of the open mouth of acarnivore for use in mounting skins or furs;

Figure 2, a vertical section of the structure shown in Figure 1;

Figure 3, a top view of the lower jaw of the structure taken on the line33, Figure 2;

Figure 4, a sectional elevation of a dental demonstrating model made inaccordance with my invention;

Figure 5, a vertical section. of a press adapted to form the parts of anarticle of the character illustrated in Figures 1 and 4, by my novelprocess taken in a plane indicated by the line 5-5 in Figure 6;

Figure 6, a section along the line 6-43, Figure 5;

Figure 7 a fragmentary sectional view of the cooperative portions of thedie-members of the press shown in Figure 5, drawn to an enlarged scale;and

Figure 8, an enlarged section of the finished article, taken in theplane of the section shown in Figures 5 and 7.

Referring first to Figures 1 to 3 of the drawings, the new article ofmanufacture shown therein comprises the upper and lower jaws 5 of themouth of a carnivore in the open position with the tongue between them.

The article is adapted to be placed an entirety into the prepared headof a dead animal in the art of preserving it either in life-like manneror in the form of a rug or as a fur piece for feminine apparel.

The jaws and the teeth thereon are molded integrally of a celluloidcompound 1924. Serial No. 716,713.

or other suitable material that will soften under heat and: harden inpressed Form when subsequently cooled andthey are connected at theirrear ends by an adhesive such as dissolved celluloid applied betweenadjoining flanges 6; i The tongue 7 which may in an embossing press ofsuitable construction. l a i ,7 a

In using acelluloid compound it is essential that the material be heatedbefore or while it is subjected to the pressure required to mold it inthe desired term and this may be. accomplished by heating the pressthrough the medium of steam or hot water contained in or passing througha jacket formed around the same.

In Figures-), 6 and 7 of the drawings is illustrated a press of simpleform consisting of a female die 10 fixed at the bottom of a casing 12 amale die 9 titted for reciprocation in the casing above the female die,a screw 13 or other pressure clement engaging the male die to force ittoward the t'ernalc die, and a heating jacket 14 formed around thecasing.

In the production of jaws having teeth of ditl erent lengths like thoseshown in Figure 1, it is required that the material from which the jawsare formed be augmented according to the varying proportions of theteeth. at the points at which the teeth are located, so that thetinishcdarticle may be of substantially uniform thickness throughout itsextent andany one part thereof will not be weaker or more fragile thananother. This object I accomplish by placing in the cavities of theintaglio die 10 pieces of the material in quantities varying in ratio totheir depth,

which when heated to the required tempe 'ature will unite with the sheetfrom which the body of the article is formed and become an integral partthereof when the dicsbetwecn which the sheet is placed are forcedtogether.

This :t'eati'ireot my invention is best illustrated in Figure 7 in whichthe material placed. in the depressions of the female die has beendesignated by the reference character 15 while in both Figure 5 andFigure 7, the blank sheet of the material from which the article isformed is shown at 16.

The finished article produced between dies of the form shown, isillustrated in section in Figure 8.

Itwill be apparent that the above described method of making the jawsisot particular importance when the teeth differ in length as markedlyas those in the mouth of the carnivorous animal shown in Figure l of thedrawingswhichinclude the incisors '17, the molars 18 and thecomparatively large canine teeth 19.

It Will be evident that my inventiorras hereindemribed, is notrestricted'to the production of jaws for taxidermal use but that itzisequally suitable for making. similar articles designed for differentpurposes Thus in; Figure 4 is illustrated a dental model for technicalor experimental. work, or for demonstrating purposes, composed of twomembers 20 hinged together as at. 21. Each; memberlconsists of a model.22 of a human jaw with the teeth thereof llIIPGDfGCt form andarrangement, at the end of a curved stem 23 by means of which it ismaterial in the forming press hereinbet'ore described.

Having thus described my invention. what I claim and desire to secure byLetters Patent is: r a

1. As a new article ofvmanutacture an artificial mouth structure fortaxidermal use,

comprisingtwo members simulating the jaws of an animal inclusive oi thetissues and the teeth, and a member simulating the tongue of the animal,the members being immovably fixed together in their natural openposition.

2; As a new article of manufacture, an

' artificial mouth structure for taxidermal use comprising two memberssimulating the jaws -01 an animal, :inelusive'ol the tissues and.

teeth, and a member simulating the tongue of 1 the animal, the membersbeing rigidly connected at their posterior portions.

In testimonyiwhereof I have afiixed my signature;

en'srav FRED mewirasnnp

